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Q1. A pipe open only at one end has a fundamental frequency of 241 Hz. A second pipe, initially identical to the first pipe, is shortened by cutting off the portion of the open end. At the present, when both pipes vibrate at their fundamental frequencies, a beat frequency of 13 Hz is heard. How many centimeters were cut off the end of the second pipe? The speed of sound is 343 m/s.
Q2. A diver 50 m deep in 10 degrees Celsius fresh water exhales a 1.2 cm diameter bubble. What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 35 degrees Celsius? Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
A dentist's drill starts from rest. After 3.30 s of constant angular acceleration it turns at a rate of 2.8 x 10^4 rev/min, Determine the angle (in radians) through which the drill rotates during this period
In effect, the first circular dark fringe in the diffraction pattern defines the size of the central bright spot on the moon. find the diameter (not the radius) of the central bright spot on the moon.
A block with mass m = 7.0 kg is attached to two springs with spring constants kleft = 37.0 N/m and kright = 48.0 N/m. The block is pulled a distance x = 0.21 m to the left of its equilibrium position and released from rest. 1) What is the magnitud..
A simple pendulum is made of a small blob of mass m = 9.500 kg attached to the end of an inextensible wire. What is the magnitude of the tension in the wire
q1. the magnitude of the gravitational force between two sumo wrestlers just before they collide r 0.025 m is 2.77
A thin, light wire is wrapped around the rim of a wheel. The wheel rotates without friction about a stationary horizontal axis that passes through the center of the wheel. The wheel is a uniform disk with radius 0.28. An object of mass 4.0 is suspend..
What phase difference between two otherwise identical travelling waves, moving in the similar direction along a stretched string.
You're driving down the highway late one night at 18 - {rm m}/{rm s} when a deer steps onto the road 45 -{rm m} in front of you. Your reaction time before stepping on the brakes is 0.50- {rm s}, and the maximum deceleration of your car is 11 {rm m..
David is driving a steady 25 m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.8 m/s^2 at the instant when David passes.
The nucleus in an iron atom has a radius of about 4.0 X 10-15 m and contains 26 protons, What is the magnitude of the gravitational force between those same two protons
A 12 DC power supply is connected to the primary coil of a transformer. What is the rms voltage across the secondary
Your little sister (mass 25.0 kg) is sitting in her little red wagon (mass 8.65kg ) at rest. You begin pulling her forward, Calculate the impulse you imparted to the wagon and its passenger
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